Script problems

[FlawlessHappiness]

The error "Unexpected end of file" means that somewhere you placed 1 " or ( or { where there actually should be 2 like this: "" or () or {}

I found a line where you forgot them.

Try placing it the right way. Here is the line:
AddEntityCollideCallback("stuhl,wandbrechen,brech, true, 1);



You forgot it at the end of "stuhl" and on both sides of "wandbrechen", and "brech"